"During World War I, millions of women contributed to the war effort, not only through volunteer service but by entering the labor force as nurses, agricultural laborers and factory workers. Here, a woman works in the converted Baldwin Locomotive property in Eddystone, Pennsylvania, on the Delaware River south of Philadelphia. After April 1918, 3,000 women participated in a work force of 15,000 to manufacture Enfield rifles for British and American troops". -Library of Congress Online Exhibit